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Karpenter vs. CAST AI K8s Automation Platform

Compare two Kubernetes optimization solutions to find out which one is a better fit for your business.

CAST AI vs. Karpenter at a glance

Fast action, automated Kubernetes cost reduction, monitoring, and security.
  • An automated cost management platform tailored for Kubernetes that works with all three major cloud providers.
  • Automated optimization features reduce cloud costs by 63% on average, with minimal configuration effort.
Open-source, automated node provisioning and deprovisioning.
  • A tool for improving the efficiency and cost of running workloads on Kubernetes clusters, supports only Amazon EKS.
  • Karpenter provisions and optimizes nodes automatically, removing them when no longer needed. However, it requires lengthy configuration to make it work right.

CAST AI vs. Karpenter: quick feature comparison

Feature CAST AI 🥇 Karpenter
Vendor support
Google Cloud
Microsoft Azure
Autoscaling features
Unscheduled Pod policy
Bin packing pods
Delete Empty Node policy
Optimized pod grouping
Spot instance support
Observability features
Cost monitoring
Security insights Millions of dollars saved on Amazon EKS & KOps

“Cost optimization with CAST AI has been a big success for Branch, saving us millions of dollars annually while maintaining our reliability SLAs. The modest amount of effort by our team makes this one of the highest ROI cloud cost savings initiatives we’ve done.”

Mark Weiler, Senior VP of Engineering, Branch

Want to give CAST AI a go?

Get access to the essential K8s cost management features, incl. cluster-specific savings report, cost monitoring, and more – all within minutes of signing up.

Average savings


CAST AI manages your cloud resources automatically. No upfront payments or manual tracking and fiddling.


Operations count


Clusters connected


Supported regions


Distinct instance types

Features your K8s cluster will love

Free features

No CC required. Unlimited clusters.

Savings report

Connect your cluster, analyze all workloads, and get a report comparing your current and optimized infrastructure – and cut your bill by half or more.

Cost monitoring

View your cloud costs in one place, monitor them in real time, and understand where exactly they come from.

Cloud security

Get all the key cloud security insights in one place, prioritize configuration issues and vulnerabilities, and share your findings easily.

Premium Kubernetes automation
Advanced autoscaling

Depending on your workload’s needs, CAST AI adds and removes resources necessary to ensure top performance at the best price.

Instant rebalancing

Analyze and optimize your cluster automatically to enjoy improved performance at a far lower cost.

Spot instance automation

Save even 90% with spot instance automation – and have your workloads moved automatically on their termination.

Automatic rightsizing

CAST AI automatically selects the resources your workload needs, eliminating the risk of under and overprovisioning.

Immediate relief for your cloud spend

CAST AI reduces your cloud costs without requiring hours of engineer time to set things up. You will get the first savings within an hour of enabling automation.

Fair and straightforward pricing

CAST AI bills you for the number of CPUs, not the savings amount. Without extra charges for cost optimization, monitoring, or security features.

Effortless implementation

Connect your clusters, set policies, and turn automated optimization on to have CAST AI take care of Kubernetes deployment 24/7.

Want to give CAST AI a go?

Get access to the essential K8s cost management features, incl. cluster-specific savings report, cost monitoring, and more – all within minutes of signing up.